EP 0067562 B1 19850109 - MAGNETIC REPRODUCING APPARATUS
Title (en)
MAGNETIC REPRODUCING APPARATUS
Publication
Application
Priority
JP 8836781 A 19810609
Abstract (en)
[origin: JPS57203229A] PURPOSE:To obtain a reproduced picture with less noise through a small tracking error, by applying an error corresponding to the speed difference to a control signal when a tape speed is increased rapidly. CONSTITUTION:A pulse in response to the moving speed of a tape of an output of an FG48 obtained at an output side of an amplifier 49 is supplied to a clock input of an increase/decrease counter 80 and a pulse at each one field of a video signal obtained at the output side of a delay circuit 72b is supplied to a load input of the counter 80. A counting value in response to the tape speed at present field is latched to a latch circuit 81 in response to the pulse at each one field, the counting value in response to the tape speed before one field than the present field is latched to a latch circuit 82, the difference signal of contents between the circuits 81 and 82 is calculated at 83 and added at 84 with the content of an increase/decrease counter 68. The output of addition is sampling-held at the point of time at the end of reproducing period of heads 6a and 6b, and the storage value is applied to bimorphs 7a and 7b at noncontact period between the head and the tape.
IPC 1-7
IPC 8 full level
H04N 5/7826 (2006.01); G11B 5/58 (2006.01); G11B 5/588 (2006.01); G11B 5/592 (2006.01)
CPC (source: EP US)
G11B 5/588 (2013.01 - EP US); G11B 5/592 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB NL
DOCDB simple family (publication)
EP 0067562 A1 19821222; EP 0067562 B1 19850109; AT E11189 T1 19850115; CA 1180113 A 19841227; DE 3261830 D1 19850221; JP S57203229 A 19821213; US 4825311 A 19890425
DOCDB simple family (application)
EP 82302650 A 19820524; AT 82302650 T 19820524; CA 404461 A 19820604; DE 3261830 T 19820524; JP 8836781 A 19810609; US 38593482 A 19820607